That dragster might as well have come into my garage and sucker punched my Street Triple in the face. What a bike.
I agree with you, the Ninja 500 (GPZ500 in Euroland) is a great first "bigger" bike. The only thing I would caution on is it's going to be bigger/heavier than the 300. But it is very similar to the GS500 in terms of power output (50hp) and should be pretty forgiving. It should be fine for anyone with a few days training under their belt - it's more of a commuter than a sportsbike so don't let the '500' fool you into thinking its anywhere near as manic as a 600 sport. They also made them for 10-20 years, so there should be something to suit all budgets.
Things to check: marks on the engine covers (indicate if its been dropped), general chain/sprocket condition (look up some youtube videos that are great at explaining what a bad sprocket looks like), tyre wear, make sure all the electrics work, put it on the centre stand if it has one and move the handlebars side to side and check it feels smooth.... hmm what else am I forgetting GAF? It's only been 2 weeks since I bought the wifes CBR600F and I've forgotten what I looked at.
Ninja 500 is a great first bike, as is the GS500 (as can be attested by me and a few others in this thread). Miles don't matter as long as it's been maintained. There are people out there who will tell you "don't buy a bike with over 10k miles" but it really doesn't matter, and there is also a thing as too few miles, because then you get into having to replace dryrotten rubber parts and stuff.
I don't know much about the Ninja 500's design except that it was pretty similar to the GS500 but had liquid cooling. I'm pretty sure there were no big changes, if any, throughout the years so there shouldn't be an advantage to getting one year over another except price. They made tons of them, so parts will be easily available, and I know there's some forums out there for it.
If you know someone who's had bikes and even better who has worked on bikes, take them along when you go to look at bikes you find. Check for marks that mean the bike's been dropped. Simple scrapes usually indicate low (or no) speed drops, whereas longer horizontal scrapes indicate higher speed drops. If the bike has been dropped, it's not the end of the world, just make sure everything is straightened out and there's no engine damage. I also recommend that you don't buy anything until you've test ridden it. You can only tell so much by looking at a bike and being able to take it out and getting it through the gears will bring up things that you wouldn't have seen otherwise.
If you come up with any other questions, post 'em.
I agree with you, the Ninja 500 (GPZ500 in Euroland) is a great first "bigger" bike. The only thing I would caution on is it's going to be bigger/heavier than the 300. But it is very similar to the GS500 in terms of power output (50hp) and should be pretty forgiving. It should be fine for anyone with a few days training under their belt - it's more of a commuter than a sportsbike so don't let the '500' fool you into thinking its anywhere near as manic as a 600 sport. They also made them for 10-20 years, so there should be something to suit all budgets.
Things to check: marks on the engine covers (indicate if its been dropped), general chain/sprocket condition (look up some youtube videos that are great at explaining what a bad sprocket looks like), tyre wear, make sure all the electrics work, put it on the centre stand if it has one and move the handlebars side to side and check it feels smooth.... hmm what else am I forgetting GAF? It's only been 2 weeks since I bought the wifes CBR600F and I've forgotten what I looked at.